The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Aug. 18, 2008
Kaoru Yoshino, Tokyo, JP;
Takaya Muraishi, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Takeshi Shintani, Kanagawa, JP;
Yasushi Akiba, Kanagawa, JP;
Satoshi Hatori, Kanagawa, JP;
Kaoru Yoshino, Tokyo, JP;
Takaya Muraishi, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Takeshi Shintani, Kanagawa, JP;
Yasushi Akiba, Kanagawa, JP;
Satoshi Hatori, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The invention provides a charging device used in an image forming apparatus such as a copier, a fax machine, a printer or the like, the charging device including: a gold-plated discharge wire for charging an image carrier such as a photoconductive member or the like; and a cleaning member, having an abrasive, for cleaning the discharge wire, with the gold plating being maintained over time satisfactorily, and provides a process cartridge having this charging device. The cleaning member has an abrasive containing alumina and/or silicon, the grain size of which ranges from #6000 to #8000. The discharge wire is a tungsten wire on which a plating film is formed by gold plating, such that the thickness of the plating film is not smaller than 1.5 μm, and the diameter of the tungsten wire is not smaller than 30 μm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile